<html>
<head>
    <meta charset="utf-8" />
    <title></title>
</head>
<body>
<script type="text/javascript">
    var stuName="张三";
    alert(stuName);
    document.write(stuName);
    document.write(stuName);
    console.log(stuName);
    var stuSex="男";
    var x=y=z=10;
    console.log(x);
    console.log(y);
    console.log(z);
    console.log(typeof stuName);
    console.log(typeof stuSex);
    var ischecked=true;
    console.log(typeof  ischecked);
    console.log(10+12.5);
    console.log(typeof(10+"12.5"));
    console.log(typeof(10+true ));
    console.log(10+true);
</script>
</body>
</html>
